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There was chaos and confusion Thursday night in Boston, involving a police officer who was shot and killed at MIT, a carjacking nearby, the death of one Boston Marathon Bombing suspect and a manhunt for the second. Here’s what we know:

Around 10:30 P.M. EST, Thursday evening, a police officer was shot and killed on the campus of MIT in Cambridge, which is part of Boston.

Around midnight, during the search for suspects, there were reports of two armed men carjacking a Mercedes nearby, possibly taking someone hostage, and heading to Watertown, which is also part of the Boston area, not far from Cambridge.

The suspects were followed there by a massive police presence, and after a shootout, one of them was wounded, and later died at a hospital.

Here’s some raw video of the shootout with multiple shots being fired, police chasing the suspect, and shouting back and forth about who has rifles.

There were also reports of multiple explosions, as the suspects used grenades, explosives, or IEDs during the shooting and subsequent chase. And there was an announcement that a pressure cooker was found at the scene in Watertown.

It was unclear for a lot of the night whether there was a connection between the shooting, the carjacking, and the Boston Marathon Bombers. But around 3:00 A.M. Eastern, the Boston Globe reported that the suspects were related to the bombing.

Then there were reports that authorities were going door-to-door in Watertown looking for the second suspect. Residents were warned to stay inside, and not to open their doors, unless it was the police.

So, the first suspect . . . suspect #1, with the black hat, from the FBI photos . . . was killed during the chase. While suspect #2 was on the loose, a third guy on the scene was told to remove his clothing, arrested, placed in a car, taken back out of the car, photographed, questioned, and released.

Things in the investigation picked up a lot more quickly yesterday, because the FBI released new, clear surveillance photos of the suspects yesterday evening. They even got a better photo after that, from Facebook.

And actually, in general, social media seemed alot farther ahead of the fast-changing events last night than bigger media outlets. Maybe that’s the future of reporting.

For example, a photo went around on Twitter showing a missing Brown University student named Sunil Tripathi. Supposedly his name was mentioned on a police scanner, and you can get live streaming feeds of police scanners online.

Anyway, he looks a lot like Suspect # 2 in the marathon bombing, the one with the white hat. Whether this all comes together, it’s just interesting how insanely fast things move online these days. The TV anchors can barely keep up.